Bitcoin ETFs Post $606 Million Inflow, Biggest Since May 1

U.S. spot Bitcoin ETFs took in $606.29 million on Thursday, their largest single-day haul since May 1, according to SoSoValue data reported by Decrypt on August 21, 2026. The day beat Wednesday's $517.19 million and stretched the inflow streak to four sessions worth roughly $1.61 billion. BlackRock's IBIT collected $502.99 million of Thursday's total, about 83 cents of every dollar that entered the category, while Fidelity's FBTC took $64.74 million, Bitwise's BITB $26.4 million and Ark and 21Shares' ARKB $12.2 million. VanEck's HODL was the lone decliner, shedding $3.59 million. August now stands at $2.07 billion, the best month of 2026 so far, ahead of April's $1.97 billion.

Background

Spot Bitcoin ETFs give investors exposure to Bitcoin without directly owning it: the issuer holds the coin and the investor owns a 1:1 equivalent, gaining real-time exposure to the price. The funds have been extremely popular since launching in early 2024, with BlackRock, described by Decrypt as a $15 trillion asset manager, the primary beneficiary. Concentration has been a recurring feature of this month's flows. Earlier in August the funds drew $853.5 million over five days, with roughly 80% arriving through IBIT. Thursday's session narrowed further: IBIT's share rose to 83% from 55% on Wednesday, when eight of 12 funds finished positive and none were in the red. Across the four sessions, IBIT alone accounted for about $1.09 billion of the $1.61 billion. That squeeze has already claimed a fund. Hashdex shut its DEFI Bitcoin ETF, the first U.S. spot Bitcoin fund ever liquidated, with a final trading day of August 17. It charged the same 0.25% fee as IBIT but held $14.7 million against IBIT's $47 billion, generating roughly $26,000 a year in fees, which Decrypt characterized as not enough to run a fund.

What happened

According to SoSoValue data cited by Decrypt, U.S. spot Bitcoin ETFs pulled in $606.29 million on Thursday, their biggest single-day haul since May 1. That topped Wednesday's $517.19 million and extended the inflow streak to four sessions: $297.56 million Monday, $189.30 million Tuesday, then Wednesday and Thursday, for roughly $1.61 billion in all. August now stands at $2.07 billion, the best month of 2026, beating April's $1.97 billion, with seven trading sessions left. BlackRock's IBIT collected $502.99 million on Thursday, roughly 83 cents of every dollar that entered the category, up from a 55% share on Wednesday. Fidelity's FBTC took $64.74 million, Bitwise's BITB $26.4 million and Ark and 21Shares' ARKB $12.2 million, while VanEck's HODL shed $3.59 million. Across the four sessions, IBIT accounted for about $1.09 billion of the $1.61 billion. Ethereum ETFs added almost $221 million, their largest single-day intake since October 2025 and a fourth consecutive positive session. Smaller products moved hardest in percentage terms: XRP funds took $13 million against $2.35 million on Wednesday, and Solana funds took $15 million against $2.10 million. Every listed asset drew inflows, including Hyperliquid's product, which had been the lone outflow a day earlier. Separately, Hashdex shut its DEFI Bitcoin ETF, the first U.S. spot Bitcoin fund ever liquidated, with a final trading day of August 17.

Market impact

Bitcoin traded around $77,000 Friday after challenging $80,000 overnight and touching roughly $79,400, per Decrypt. It cleared $69,000 Wednesday and $72,000 Thursday and is up about 24% since Monday, its best week since 2023, while still some 38% below the record above $126,000 set in October 2025. The chart has not flipped: Bitcoin's death cross has held since November 16, 2025, and while price climbed back above the 200-day simple moving average at $69,005, the 50-day sits at $63,976, meaning roughly $5,000 more is needed before a golden cross completes. Ethereum changed hands near $2,357 and XRP around $1.38, extending what was already its best week for the Ripple-linked token since the 2024 election pump to a roughly 38% gain. Decrypt reports the move began with the Treasury's decision to at least double long-end bond buybacks, then accelerated through a squeeze that liquidated $3 billion in shorts. On the flow side, Wednesday saw Bitcoin funds collect one dollar for every $220 reaching XRP funds; on Thursday that gap closed to about 47 to one, so money broadened across assets while narrowing within Bitcoin.

Why it matters

The four-day run of roughly $1.61 billion, and August's $2.07 billion, shows ETF demand returning at scale, but the distribution matters as much as the size. With IBIT taking about $1.09 billion of that four-day total and 83% of Thursday's haul, the category's economics increasingly favor the largest issuer. Decrypt's account of Hashdex's DEFI Bitcoin ETF makes the consequence concrete: the same 0.25% fee as IBIT, but $14.7 million in assets against IBIT's $47 billion, produced roughly $26,000 a year in fees and the first liquidation of a U.S. spot Bitcoin fund. Holders past the August 17 final trading day lost their exchange exit and are owed a cash payment at net asset value, dated either August 24 or August 28 depending on which Hashdex filing you read, minus closing costs and adjusted for Bitcoin's price while the fund sells its remaining 225 coins. That sale is happening during Bitcoin's best week since 2023, which Decrypt notes has not yet flipped the chart given the death cross in place since November 16, 2025.